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Making your own lightning arrestor.
Making your own lightning arrestor.
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Old 8th November 2017, 04:44 PM   #21
infinia is offline infinia  United States
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Join Date: May 2005
Location: SoCal
Lightning / surge protection on a branch circuit has much less requirements than at a 'service entrance'. This is because of the impedance (read inductance) is greater and slows the rising edge of the lightning waveform so the peaks are less. ( In the USA UL has done quite a bit of research, studies, and testing and has standard waveforms shape, peak voltages.). The best protection after the fuse is a common mode choke with 2 or 3 MOVs and /spark gaps on the input and X and Y caps on the output.
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